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Spark Plug Torque Settings


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  • 2 months later...

Bump...does anyone know the torque specs for the plugs?

 

Lil' Wednesday appears to have a bad coil pack (P0301 code), so I'm going to replace that and do the plugs at the same time. You know, since I'm already in there.

 

Also - damn, these coil packs are expensive! Like $80 each for the ACDelco part - off-brands aren't much cheaper.

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  • 1 year later...

In my younger years I must have changed 100's of spark plugs. Never used any torque wrench.

All I did was tighten the spark plug with the usual manual wrench with gentle force. Never had an issue.

 

Spark plug is not subjected to mechanical load. Just has to be tight enough so it does not get lose from engine vibrations. Torque values should not matter much here. But I never had to deal with a spark plug and coil combo situation.

 

I have designed thousands of bolts subjected to extreme loads. There it was critical to torque the bolts to create tensile pre-stress in the bolt. That increases fatigue life of bolts. And prevents getting lose.

 

 

Edited by Bobby MSME
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